On Mon, 2003-03-17 at 19:32, John Summerfield wrote: > On Mon, 17 Mar 2003, Steve Gentry wrote: > > > Further . . . > > > > "Once a fix is made to the code, the patched version of the OS can be > > swapped into place . . . without taking down the system" > > > > I've been a sys.prog. for about 20 years, 15 of those in VM and I don't > > know of any feature that will let a sys prog do this! If so, I've spent a > > lot of late nights and weekends upgradeing when I could have done it > > during the week. In reality, no you do not have to power the box off, but > > you do have to cycle VM or VSE. I'm not sure about z/OS, but since the > > author mentions "virtual machines" aka VM, in my opinion he is wrong. Now > > don't misunderstand me, I'm for VM getting all the "accurate" press it can > > > I read that and wondered. > > You can come pretty close on IA32 hardware, using duplicate servers and > so-called failover. See www.linux-ha.org. >
I think ComPaqard calls this Hymilaya (used to be Tandem).
